/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.resource.mapping;
import javax.el.ValueExpression;
import javax.faces.context.FacesContext;
import org.richfaces.el.util.ELUtils;
/**
* <p>
* Determines resource mappings and request path for mapped resources.
* </p>
*
* @author <a href="http://community.jboss.org/people/lfryc">Lukas Fryc</a>
*/
public class ResourceMappingConfiguration {
public ResourceMappingConfiguration() {
}
private static final String KEY = ResourceMappingConfiguration.class.getName() + ".location";
static final String DEFAULT_LOCATION = "#{facesContext.externalContext.requestContextPath}/org.richfaces.resources/javax.faces.resource/";
/**
* Returns the configured location of static resources as string evaluated against EL expressions in current context, either
* from configuration option or predefined location corresponding to current application stage.
*
* @return the configured location of static resources as string evaluated against EL expressions in current context
*/
public String getLocation() {
final FacesContext context = FacesContext.getCurrentInstance();
String location = (String) context.getAttributes().get(KEY);
if (location == null) {
ValueExpression mappingLocationExpression = ELUtils.createValueExpression(getLocationAsExpression());
location = mappingLocationExpression.getValue(FacesContext.getCurrentInstance().getELContext()).toString();
context.getAttributes().put(KEY, location);
}
return location;
}
/**
* Returns the configured location of static resources as string with EL expressions, either from configuration option or
* predefined location corresponding to current application stage.
*
* @return the configured location of static resources as string with EL expressions
*/
private static String getLocationAsExpression() {
String location = PropertiesMappingConfiguration.getLocation();
if (location == null) {
return DEFAULT_LOCATION;
}
return location;
}
}